la6581u Sanyo Semiconductor Corporation, la6581u Datasheet - Page 4
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la6581u
Manufacturer Part Number
la6581u
Description
Btl Driver Single-phase Full-wave
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
1.LA6581U.pdf
(4 pages)
Sample Application Circuit
*1 : When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to
*2 : To obtain Hall bias from V CC , carry out 1/2 × V CC bias as shown in the figure. Linear driving is made through
*3 : When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0V. Therefore, the Hall
*4 : Keep this open when not used.
*5 : When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring.
secure the regenerative current route. Similarly, Cr is necessary to enhance the reliability when there is no
capacitor near the fan power line.
voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup
performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further.
element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output
amplitude is made with R1. (When V CC = 12V, the step *2 above proves advantageous for IC heat generation.)
In this case, insert the capacitor as shown in the figure.
This catalog provides information as of May, 2007. Specifications and information herein are subject
to change without notice.
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products described or contained herein.
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Elements in substrate
*1
Di
*2
Cr
R2
R2
H
*5
LA6581U
HB
IN -
IN +
GND
V CC
OUT1
OUT2
FG
*4
*3
R1
H
PS No.A0601-4/4
HB
IN -
IN +